diff options
Diffstat (limited to 'src/3rdparty/freetype/include/freetype/ftbbox.h')
-rw-r--r-- | src/3rdparty/freetype/include/freetype/ftbbox.h | 129 |
1 files changed, 65 insertions, 64 deletions
diff --git a/src/3rdparty/freetype/include/freetype/ftbbox.h b/src/3rdparty/freetype/include/freetype/ftbbox.h index f9eb70b137..22da70c0dc 100644 --- a/src/3rdparty/freetype/include/freetype/ftbbox.h +++ b/src/3rdparty/freetype/include/freetype/ftbbox.h @@ -1,30 +1,30 @@ -/***************************************************************************/ -/* */ -/* ftbbox.h */ -/* */ -/* FreeType exact bbox computation (specification). */ -/* */ -/* Copyright 1996-2018 by */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - - - /*************************************************************************/ - /* */ - /* This component has a _single_ role: to compute exact outline bounding */ - /* boxes. */ - /* */ - /* It is separated from the rest of the engine for various technical */ - /* reasons. It may well be integrated in `ftoutln' later. */ - /* */ - /*************************************************************************/ +/**************************************************************************** + * + * ftbbox.h + * + * FreeType exact bbox computation (specification). + * + * Copyright (C) 1996-2019 by + * David Turner, Robert Wilhelm, and Werner Lemberg. + * + * This file is part of the FreeType project, and may only be used, + * modified, and distributed under the terms of the FreeType project + * license, LICENSE.TXT. By continuing to use, modify, or distribute + * this file you indicate that you have read the license and + * understand and accept it fully. + * + */ + + + /************************************************************************** + * + * This component has a _single_ role: to compute exact outline bounding + * boxes. + * + * It is separated from the rest of the engine for various technical + * reasons. It may well be integrated in 'ftoutln' later. + * + */ #ifndef FTBBOX_H_ @@ -44,43 +44,44 @@ FT_BEGIN_HEADER - /*************************************************************************/ - /* */ - /* <Section> */ - /* outline_processing */ - /* */ - /*************************************************************************/ - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Outline_Get_BBox */ - /* */ - /* <Description> */ - /* Compute the exact bounding box of an outline. This is slower */ - /* than computing the control box. However, it uses an advanced */ - /* algorithm that returns _very_ quickly when the two boxes */ - /* coincide. Otherwise, the outline Bezier arcs are traversed to */ - /* extract their extrema. */ - /* */ - /* <Input> */ - /* outline :: A pointer to the source outline. */ - /* */ - /* <Output> */ - /* abbox :: The outline's exact bounding box. */ - /* */ - /* <Return> */ - /* FreeType error code. 0~means success. */ - /* */ - /* <Note> */ - /* If the font is tricky and the glyph has been loaded with */ - /* @FT_LOAD_NO_SCALE, the resulting BBox is meaningless. To get */ - /* reasonable values for the BBox it is necessary to load the glyph */ - /* at a large ppem value (so that the hinting instructions can */ - /* properly shift and scale the subglyphs), then extracting the BBox, */ - /* which can be eventually converted back to font units. */ - /* */ + /************************************************************************** + * + * @section: + * outline_processing + * + */ + + + /************************************************************************** + * + * @function: + * FT_Outline_Get_BBox + * + * @description: + * Compute the exact bounding box of an outline. This is slower than + * computing the control box. However, it uses an advanced algorithm + * that returns _very_ quickly when the two boxes coincide. Otherwise, + * the outline Bezier arcs are traversed to extract their extrema. + * + * @input: + * outline :: + * A pointer to the source outline. + * + * @output: + * abbox :: + * The outline's exact bounding box. + * + * @return: + * FreeType error code. 0~means success. + * + * @note: + * If the font is tricky and the glyph has been loaded with + * @FT_LOAD_NO_SCALE, the resulting BBox is meaningless. To get + * reasonable values for the BBox it is necessary to load the glyph at a + * large ppem value (so that the hinting instructions can properly shift + * and scale the subglyphs), then extracting the BBox, which can be + * eventually converted back to font units. + */ FT_EXPORT( FT_Error ) FT_Outline_Get_BBox( FT_Outline* outline, FT_BBox *abbox ); |